The male protagonist Zhao Xin (originally known as "Gou'er") was born as the son of a shepherd in the Longxi border area. During the era when Emperor Wu of the Han Dynasty opened up new territories, he relied on his talent in riding and archery and battlefield experience to grow from an ordinary cavalryman to a general of the Han army. Struggling forward between "protecting the home and the country" and "human choices", he finally understood that "the responsibility of a soldier is not only to fight, but also to protect the people", showing the passion and transformation of the Han Dynasty border soldiers in national conflicts and personal growth.
